My son went to pick this 18 inch weed and immedietly he felt like needles hit him and whitin 3 minutes had water blisters on any part that he touched. I thought he was joking so i went to pull it out, Had numness on my arm and hand with burning sensation for about 30 hours. Felt like when your arm and hand falls asleep but with burning and extreme pain. After 40 years of gardening i’m stumped!!!!Just found your program on my iphone and love it!!!!!

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Stinging pellitory or stinging nettle http://fieldguide.mt.gov/detail_PDURT0D020.aspx
I’ve found its cousin, Canadian clearweed, to be abundant this year in West Georgia. It looks alot like it’s stinging cousin but no pain when pulling.